Chrysanthemum plant named ‘DLFDALL2’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘DLFDALL2’, characterized by its upright plant habit; uniform growth habit; vigorous growth habit and rapid growth rate; durable and robust dark green-colored leaves; strong upright flowering stems; decorative-type inflorescences with bright yellow-colored ray florets; relative tolerance to high production temperatures; and good postproduction longevity.

Botanical designation: Chrysanthemum X morifolium.

Cultivar denomination: ‘DLFDALL2’.

STATEMENT REGARDING PRIOR DISCLOSURES BY INVENTOR/APPLICANT & ASSIGNEE

A Columbian Plant Breeder's Rights application for the instant plant wasfiled by the Assignee, Deliflor Royalties B.V. of Maasdijk, TheNetherlands on Jul. 12, 2021, application number A212811. Foreignpriority is not claimed to this application.

The Inventor/Applicant and Assignee assert that no publications noradvertisements relating to sales, offers for sale or public distributionoccurred more than one year prior to the effective filing date of thisapplication. Any information about the claimed plant would have beenobtained from a direct or indirect disclosure from theInventor/Applicant and/or the Assignee. Inventor/Applicant and Assigneeclaim a prior art exception under 35 U.S.C. 102(b)(1) for disclosureand/or sales prior to the filing date but less than one year prior tothe effective filing date.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofChrysanthemum plant, botanically known as Chrysanthemum x morifolium,typically grown as a cut flower Chrysanthemum and hereinafter referredto by the name ‘DLFDALL2’.

The new Chrysanthemum plant is a product of a planned breeding programconducted by the Inventor in Maasdijk, The Netherlands. The objective ofthe breeding program is to create new cut flower Chrysanthemum plantswith unique and attractive inflorescences.

The new Chrysanthemum plant originated from a cross-pollination inMarch, 2015 of a proprietary selection of Chrysanthemum x morifoliumidentified as code number KR 2011.0438-1, not patented, as the female,or seed, parent with a proprietary selection of Chrysanthemum xmorifolium identified as code number KR 2011.9169-1, not patented, asthe male, or pollen, parent. The new Chrysanthemum plant was discoveredand selected as a single flowering plant from within the progeny of thestated cross-pollination in a controlled greenhouse environment inMaasdijk, The Netherlands in March, 2016.

Asexual reproduction of the new Chrysanthemum plant by vegetativeterminal cuttings in a controlled greenhouse environment in Maasdijk,The Netherlands since March, 2016 has shown that the unique features ofthis new Chrysanthemum plant are stable and reproduced true to type insuccessive generations of asexual reproduction.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘DLFDALL2’. These characteristics incombination distinguish ‘DLFDALL2’ as a new and distinct Chrysanthemumplant:

-   -   1. Upright plant habit; uniform growth habit.    -   2. Vigorous growth habit and rapid growth rate.    -   3. Durable and robust dark green-colored leaves.    -   4. Strong upright flowering stems.    -   5. Decorative-type inflorescences with bright yellow-colored ray        florets.    -   6. Relatively tolerant to high production temperatures.    -   7. Good postproduction longevity.

Plants of the new Chrysanthemum differ primarily from plants of thefemale parent selection in the following characteristics:

-   -   1. Leaves of plants of the new Chrysanthemum are lighter green        in color than leaves of plants of the female parent selection.    -   2. Ray floret apices of plants of the new Chrysanthemum are        mostly obtuse whereas ray floret apices of plants of the female        parent selection are emarginate.

Plants of the new Chrysanthemum differ primarily from plants of the maleparent selection in the following characteristics:

-   -   1. Inflorescences of plants of the new Chrysanthemum are fully        double type (decorative) whereas inflorescences of plants of the        male parent selection are semi-double type.    -   2. Ray florets of plants of the new Chrysanthemum are bright        yellow in color whereas ray florets of plants of the male parent        selection are white in color.

Plants of the new Chrysanthemum can be compared to plants ofChrysanthemum X morifolium ‘DLFALT2’, not patented. In side-by-sidecomparisons, plants of the new Chrysanthemum differ primarily fromplants of ‘DLFALT2’ in relative leaf length to petiole length as plantsof the new Chrysanthemum have longer relative leaf length to petiolelength than plants of ‘DLFALT2’. In addition, ray florets of plants ofthe new Chrysanthemum are slightly darker yellow in color than rayflorets of plants of ‘DLFALT2’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of thenew Chrysanthemum plant showing the colors as true as it is reasonablypossible to obtain in colored reproductions of this type.

The photograph on the first sheet (FIG. 1 ) is a side perspective viewof a typical flowering stem of ‘DLFDALL2’ grown as a spray-type cutflower.

The photograph on the second sheet (FIG. 2 ) is a close-up view of upper(left) and lower (right) surfaces of typical inflorescences and typicalleaves of ‘DLFDALL2’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations andmeasurements describe plants grown during the spring in ground beds in aglass-covered greenhouse in Maasdijk, The Netherlands and under culturalpractices typical of commercial cut Chrysanthemum production. Plantswere initially given long day/short night treatments followed by shortday/long night treatments to induce flower initiation and development.During the production of the plants, day temperatures ranged from 18° C.to 25° C., night temperatures ranged from 20° C. to 22° C. and lightlevels averaged 7 klux. Plants were grown as single-stem spray-typeplants and were ten weeks old when the photographs and the descriptionwere taken. In the following description, color references are made toThe Royal Horticultural Society Colour Chart, 2015 Edition, except wheregeneral terms of ordinary dictionary significance are used.

-   Botanical classification: Chrysanthemum X morifolium ‘DLFDALL2’.-   Parentage:    -   -   Female, or seed, parent.—Proprietary selection of            Chrysanthemum x morifolium identified as code number KR            2011.0438-1, not patented.        -   Male, or pollen, parent.—Proprietary selection of            Chrysanthemum x morifolium identified as code number KR            2011.9169-1, not patented.-   Propagation:    -   -   Type.—Terminal vegetative cuttings.        -   Time to initiate roots, summer.—About four days at            temperatures about 20° C.        -   Time to initiate roots, winter.—About six days at            temperatures about 20° C.        -   Time to produce a rooted young plant, summer.—About 13 days            at temperatures about 20° C.        -   Time to produce a rooted young plant, winter.—About 15 days            at temperatures about 20° C.        -   Root description.—Fine, fibrous; typically creamy white in            color, actual color of the roots is dependent on substrate            composition, water quality, fertilizers, substrate            temperature and physiological age of roots.        -   Rooting habit.—Freely branching, medium density.-   Plant description:    -   -   Plant and growth habit.—Herbaceous decorative-type cut            flower that is typically grown as a single stem spray-type;            upright plant habit; vigorous growth habit and rapid growth            rate.        -   Plant height, soil level to top of foliar plane.—About 77            cm.        -   Plant height, soil level to top of inflorescence            plane.—About 86.8 cm.        -   Plant (spray) diameter.—About 21 cm.        -   Flowering stem length.—About 75.4 cm.        -   Flowering stem diameter.—About 6 mm.        -   Flowering stem internode length.—About 2.9 cm.        -   Flowering stem strength.—Strong.        -   Flowering stem aspect.—Erect.        -   Flowering stem texture and luster.—Moderately pubescent;            slightly glossy.        -   Flowering stem color, developing.—Close to 144A.        -   Flowering stem color, developed.—Close to 144A; at the            ridges, close to 148A.        -   Leaf description.—Arrangement: Alternate; simple. Length:            About 9.5 cm. Width: About 5.7 cm. Shape, in overall            outline: Obovate to broadly oblong. Apex: Abruptly acute.            Base: Attenuate. Margin: Palmately lobed, coarsely dentate            to serrate; sinuses convergent and medium to deep in depth;            not undulate. Texture and luster, upper surface: Moderately            pubescent, not rugose; slightly velvety; slightly glossy.            Texture and luster, lower surface: Moderately pubescent, not            rugose; slightly velvety; matte. Venation pattern: Pinnate.            Color: Developing leaves, upper surface: Close to 137B.            Developing leaves, lower surface: Close to a blend of 138A            and 147B. Fully developed leaves, upper surface: Close to a            blend of 137A and NN137C; venation, close to 146C. Fully            developed leaves, lower surface: Close to 147B; venation,            close to 146D. Petioles: Length: About 1.6 cm. Diameter:            About 2.5 mm by 3 mm. Strength: Moderately strong. Texture            and luster, upper and lower surfaces: Densely pubescent;            moderately glossy. Color, upper surface: Close to 146D;            edges, close to 137C. Color, lower surface: Close to 146D;            edges, close to 147B. Stipules: Quantity and appearance: Two            leafy stipules, opposite, at the petiole attachment to the            stem. Length: About 8.5 mm. Width: About 1.2 cm. Shape:            Reniform; apex, acute; base, broadly cuneate; margins,            entire. Texture and luster, upper surface: Moderately            pubescent; slightly glossy. Texture and luster, lower            surface: Moderately pubescent; matte. Color, upper surface:            Close to a blend of 137A and NN137C. Color, lower surface:            Close to 147B.-   Inflorescence description:    -   -   Appearance.—Decorative-type inflorescence form with            oblanceolate-shaped ray florets and tubular disc florets;            inflorescences, rotate and flattened in overall shape;            inflorescences borne perpendicular to peduncles and face            upright; ray and disc florets develop acropetally on a            capitulum.        -   Fragrance.—Faintly fragrant; typical of Chrysanthemums.        -   Flowering response.—Under natural conditions, plant flower            in the autumn/winter in the Northern Hemisphere; at other            times of the year, inflorescence initiation and development            can be induced under short day/long night conditions (at            least 13.5 hours of darkness); uniform flowering habit and            short response time, plants exposed to two weeks of long            day/short night conditions after planting followed by            photoinductive short day/long night conditions flower about            50 days later when grown as a spray-type.        -   Postproduction longevity.—Good postproduction longevity;            after a seven-day storage period, cut flowers will maintain            good color and substance for about two weeks in an interior            environment; inflorescences persistent.        -   Quantity of inflorescences.—Typically grown as a spray-type,            about 17 inflorescences (varying between 12 and 22) develop            per flowering stem.        -   Inflorescence size.—Diameter: About 7.4 cm. Depth (height):            About 2.5 cm. Disc diameter: About 3 mm; inconspicuous.        -   Receptacles.—Height: About 4 mm. Diameter: About 6 mm.            Shape: Broadly ovate. Color: Close to 145C.        -   Inflorescence buds.—Height: About 1.1 cm. Diameter: About            1.2 cm. Shape: Roughly spherical. Texture and luster:            Moderately pubescent; slightly glossy. Color: Developing            involucral bracts, close to 137C and 145B; developing ray            florets, close to 4A.        -   Ray florets.—Quantity and arrangement: About 200 arranged in            about five whorls. Length: About 2.4 cm, varying between 0.6            cm and 3.4 cm. Width: About 8 mm, varying between 0.1 cm and            1.2 cm. Shape: Oblanceolate; slightly to moderately concave;            moderately carinate. Apex: Mostly obtuse to occasionally            minutely and abruptly acute. Base: Cuneate. Margin: Entire;            not undulate. Aspect: About 50° from vertical, varying from            10° to 70° from vertical. Texture and luster, upper and            lower surfaces: Smooth, glabrous; slightly velvety; matte.            Color: When opening, upper surface: Close to 6A. When            opening, lower surface: Close to 6B; towards the base, close            to 5B. Fully opened, upper surface: Close to 5A; towards the            base, close to 5B; venation, close to 5A and 5B; color does            not change with subsequent development. Fully opened, lower            surface: Close to 5B; venation, close to 5B; color does not            change with subsequent development.        -   Disc florets.—Quantity and arrangement: About 70 randomly            arranged at the center of the receptacle; disc florets            typically do not fully develop. Length: About 5 mm.            Diameter: About 1.5 mm. Shape: Tubular. Apex: Obtuse.            Margin, free-part: Entire. Texture and luster, inner and            outer surfaces: Smooth, glabrous; glossy. Color, when            opening: Towards the apex, close to 151A; mid-section and            towards the base, close to 145D. Color, fully opened:            Towards the apex, close to 151B; mid-section and towards the            base, close to 145D.        -   Involucral bracts.—Quantity and arrangement: About 32            arranged in about three whorls. Length: About 1 cm. Width:            About 3.5 mm. Shape: Oblong to ovate. Apex: Bluntly acute.            Base: Cuneate. Margin: Entire. Texture and luster, upper            surface: Smooth, glabrous; glossy. Texture and luster, lower            surface: Moderately pubescent; matte. Color, upper surface:            Close to NN137B; lateral margins, translucent and close to            196D and apical margins tinged with close to N199A. Color,            lower surface: Close to 138A; lateral margins, translucent            and close to 196D and apical margins tinged with close to            N199A.        -   Peduncles.—Length: About 8 cm. Diameter: About 3 mm.            Strength: Strong. Aspect: Upright. Texture and luster:            Moderately to densely pubescent; moderately glossy. Color:            Close to 143A; at the ridges, close to 146B.        -   Reproductive organs.—Androecium: To date, stamen development            has not been observed on plants of the new Chrysanthemum.            Gynoecium: Present only on ray florets as disc florets do            not fully develop. Quantity: One per floret. Pistil length:            About 4 mm. Style length: About 3.25 mm. Style color: Close            to 150B to 150C. Stigma diameter: About 0.5 mm. Stigma            shape: Cleft, decurrent. Stigma color: Close to 14B. Ovary            color: Close to 157A.        -   Seeds and fruits.—To date, seed and fruit development have            not been observed on plants of the new Chrysanthemum.-   Pathogen & pest resistance: Plants of the new Chrysanthemum have    been observed to be resistant to Fusarium (Fusarium oxysporum f. sp.    chrysanthemi) and Western Flower Thrips (Frankliniella    occidentalis). To date, plants of the new Chrysanthemum have not    been observed to be resistant to other pathogens and pests common to    Chrysanthemum plants grown under commercial conditions.-   Temperature tolerance: Plants of the new Chrysanthemum have been    observed to tolerate temperatures ranging from about −12° C. to    35° C. and to be suitable for USDA Hardiness Zones 8 to 10.

It is claimed:
 1. A new and distinct Chrysanthemum plant named‘DLFDALL2’ as illustrated and described.